ISO 965-1 General purpose metric screw threads – Tolerances Part 1: Principles and basic data ISO 965-1:2013 – METRIC SCREW THREADS TOLERANCES SCOPE & PURPOSE Standard: ISO 965-1:2013 specifies a comprehensive tolerance system for ISO general purpose metric screw threads (M) according to ISO 261. Purpose: This standard provides the foundational principles and data for … Continue reading ISO 965-1